Description
The factory B4x/B58 heat exchanger is not built to cater to the rigorous demands often associated with a modified build. The thin core is easily overwhelmed with IATs rising dramatically once pushed beyond a few successive WOT pulls or even a few minutes at the track. This elevation in temperature gives way to the factory ECU fail safes pulling timing and reducing overall power to prevent overheating and potential permanent damage. For enthusiasts pushing their BMW to its limits, this cooling constraint presents a significant challenge.
Dinan's High Performance Heat Exchanger for the F2x/F3x chassis mitigates these issues with a more robust core (48mm thick Dinan core vs. 27mm thick OEM core) that boasts 78% more heat transfer surface area for improved cooling capacity. The significant increase in core thickness requires unique "L" shaped end tanks, contributing to overall thermal mass improvement beyond the OEM setup. With up to a 15° IAT delta recorded over stock, the Dinan heat exchanger extends your vehicle's ability to deliver maximum performance consistently for your driving enjoyment.
Features:
- Reduced IATs: Average of 8° reduction with a maximum reduction of 15° over 15 successive WOT pulls.
- Improved Cooling: Reduces the tendency to heat soak or go into limp mode.
- Thicker Core: 48mm thick Dinan cooler vs. 27mm thick stock cooler.
- Increased Surface Area: 78% more cooling surface area and volume than stock.
- Durable Construction: 100% TIG welded and pressure tested.
- Complete Kit: Installation hardware included, including xDrive specific transmission oil cooler brackets.
Fitment:
- 2016-2021 BMW 230i (F22/F23)
- 2016-2021 BMW M240i (F22/F23)
- 2016-2021 BMW 330i (F30/F31)
- 2016-2021 BMW 340i (F30/F31)
- 2016-2021 BMW 430i (F32/F33/F36)
- 2016-2021 BMW 440i (F32/F33/F36)
Specifications:
- Brand: Dinan
- Dinan Point Value: 2
- Emission Code: 7
- Labor Time (Hours): 4
- Product Type: Heat Exchanger
- UPC: 810065215215
- Part Number: D780-0002
Emissions: This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal for sale for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.
